CN110403664A - Vertebra Counterboring apparatus - Google Patents
Vertebra Counterboring apparatus Download PDFInfo
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- CN110403664A CN110403664A CN201910337392.3A CN201910337392A CN110403664A CN 110403664 A CN110403664 A CN 110403664A CN 201910337392 A CN201910337392 A CN 201910337392A CN 110403664 A CN110403664 A CN 110403664A
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- vertebra
- force
- eccentric
- counterboring apparatus
- sleeve
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- 230000004308 accommodation Effects 0.000 claims description 23
- 239000007943 implant Substances 0.000 description 40
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- 238000002513 implantation Methods 0.000 description 31
- 238000010586 diagram Methods 0.000 description 23
- 210000003484 anatomy Anatomy 0.000 description 8
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- 240000001439 Opuntia Species 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
- A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
- A61B17/1617—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material with mobile or detachable parts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/164—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans intramedullary
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
- A61B17/1671—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the spine
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
- A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
- A61B17/1631—Special drive shafts, e.g. flexible shafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
- A61B17/1633—Sleeves, i.e. non-rotating parts surrounding the bit shaft, e.g. the sleeve forming a single unit with the bit shaft
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00681—Aspects not otherwise provided for
- A61B2017/00738—Aspects not otherwise provided for part of the tool being offset with respect to a main axis, e.g. for better view for the surgeon
Abstract
The invention discloses a kind of vertebra Counterboring apparatus comprising a sleeve, an eccentric shaft, a force-applying piece and an eccentric reaming part.Sleeve has opposite a first end and a second end.Eccentric shaft is placed in sleeve.Force-applying piece connects eccentric shaft, and adjacent to the first end of sleeve.Eccentric reaming part connects eccentric shaft, and is located at the second end of sleeve.Force-applying piece can drive eccentric reaming part relative to sleeve rotating when being rotated by eccentric shaft, and vertebra Counterboring apparatus is made to have collapse state and mode of operation.
Description
Technical field
The present invention relates to a kind of Counterboring apparatus, especially with regard to a kind of vertebra Counterboring apparatus for operation on vertebra.
Background technique
Vertebra is to determine one of most important position of human body mobility, when lesion occurs for vertebra, often to patient
Considerable influence is generated, including pain, feeling of numbness, powerlessness may be caused, even the diseases such as gatism or difficulty
Shape.The cause of above-mentioned symptom is transposition to occur between centrum (bone segment) nerve or spinal cord are oppressed, and clinical diagnosis
It is upper to divide into centrum compression fracture (vertebral compression fracture), vertebra because of the difference of the origin cause of formation again
Disc herniation, spondylolisthesis, spinal canal stenosis disease or degenerative vertebra lateral bending etc..When serious symptom, patient is often
Discomfort can not be improved by correction, and operation on vertebra must be dependent on and carry out reduction therapy.
Figure 1A and Figure 1B is a kind of schematic diagram of implant for vertebra repositioning operation, and Figure 1A is the collapse state of implant,
Figure 1B is then expansion state.For because collapse of vertebra, it is flat collapse caused by displacement, such as centrum caused by osteoporosis compressing
Property fracture, the preferable operation method of therapeutic effect is that implant 9 (implantation material) is placed in vertebral cancellous in the state of folding at present
At bone, is then expanded with operation tool in expansion state, prop up centrum and restore to certain height, bone cement is allowed to have enough
Filling space, after bone cement solidification after complete centrum reset.
Operation is to bore (Awl) in the implantation point holes planned in advance on vertebra to open a way by performer, is dug out across vertebral arch
Root reaches the path of the cancellous bone of centrum, but aperture at this time is too small is not sufficient to that implant 9 is allowed to pass through, it is necessary to again with bone drill or hand
Art, which bores (drill) expansion aperture, could allow implant 9 by reaching in centrum.
To solve this problem, equipment manufacturers usually can all configure open circuit brill, bone drill or the hand of big outer diameter in instrument group
Art is bored, and performer can disposably form the biggish implantation duct of internal diameter using these instruments.But this way is dependent on very much faces
Otherwise bed experience is easy to happen chisel local derviation and causes the risk (commonly referred to as holes) for being pierced by pedicle of vertebral arch, therefore non-for primary choosing.It is more
Several performers can select replacement instrument, gradually expand aperture by the outer diameter being stepped up between instrument, to reduce operation
Risk.Even if in this way, will increase holes doubt as long as instrument outer diameter increases, while complicated replacement instrument can elongate operation
Time increases risk.
Therefore the limitation of instrument outer diameter and holes risk are quite difficult to obtain balance, for example, due to pedicle of lumbar vertebral arch
Width be only about 10mm, for reduce holes risk, if with operation safety be pay the utmost attention to, the bone drill used on clinical experience
Or surgical drill its maximum outside diameter does not exceed about 6.5 millimeters to 7 millimeters mostly, but means that the full-size for expanding back aperture yet
About 6.5 millimeters to 7 millimeters of diameter can be limited in, when implant 9 needs the aperture more than 8 millimeters or more, the beginning can ensure that enough
Space be conducive to performer operate when, usually make operation determine become extremely difficult.
Therefore how a kind of vertebra Counterboring apparatus is provided, the more narrow region on passing through anatomical structure, such as
When passing through pedicle of vertebral arch, it can maintain comparatively safe size range (such as internal diameter is about or less than 6.5 millimeters to 7 millimeters), but
The safer region on reaching anatomical structure, such as larger ruler can be expanded into when opened part in vertebral cancellous bone
It is very little, it is conducive to operation to form exceptional space, is problem to be solved.
Summary of the invention
In view of the above subject, the main object of the present invention is providing a kind of vertebra Counterboring apparatus, by eccentric shaft
The setting of (eccentric shaft) and eccentric reaming part, the collapse state for making vertebra Counterboring apparatus have size comparatively safe
And the mode of operation of size expansion, region more narrow in anatomical structure, such as pedicle of vertebral arch are passed through with collapse state, and with ruler
Very little biggish mode of operation is carried out in position tolerable in anatomical structure in reaming, such as centrum at cancellous bone, to solve over
The problem of holes risk can be can increase using larger size instrument.
To reach above-mentioned purpose, the present invention provides a kind of vertebra Counterboring apparatus comprising a sleeve, an eccentric shaft, one
Force-applying piece and an eccentric reaming part.Sleeve has opposite a first end and a second end.Eccentric shaft is placed in sleeve.Force
Part connects eccentric shaft, and adjacent to the first end of sleeve.Eccentric reaming part connects eccentric shaft, and is located at the second end of sleeve.It applies
Power part can drive eccentric reaming part relative to sleeve rotating when being rotated by eccentric shaft, have vertebra Counterboring apparatus and fold shape
State and mode of operation.
In embodiments of the present invention, it is referred to as the relative positional relationship that " bias " is generated based on sleeve.With eccentric shaft
For, the center in section, because will not overlap with the center in the section of sleeve, is referred to as " bias " on projecting direction.
Or " bias " is that the axis based on eccentric shaft is parallel with the axis of sleeve without coinciding, and between the two deviation one away from
From eccentricity can be referred to as.In place of eccentric reaming part, with eccentric axis connection, that is, using eccentric shaft as the rotation of shaft
Turn center, will not overlap with the center in the section of sleeve on projecting direction.In one embodiment of this invention, work as bias
When axis, eccentric reaming part and sleeve three are cylinder, axle center and eccentric reaming part and the eccentric shaft connection position of eccentric shaft
The subpoint at the center set, both this will not coincide with the subpoint in the axle center of sleeve, therefore be referred to as " bias ".Similarly,
The axis that eccentric shaft can be considered as is parallel with the axis of eccentric reaming part without being overlapped, and has an eccentricity between the two.Certainly originally
The technological concept of " bias " of invention is not restricted to the aspect that embodiment is lifted, other different geometry three-dimensional shapes but meets
Same or similar technological concept person is the range that the present invention is covered, such as sleeve and/or eccentric reaming part are six face columns
Body, octahedral cylinder or 12 face cylinders.
An embodiment according to the present invention, eccentric reaming part are eccentrically rotated using eccentric shaft as axle center relative to sleeve.
An embodiment according to the present invention, collapse state are eccentric reaming part and sleeve without segment difference, and mode of operation is bias
Reaming part protrudes from sleeve side.
An embodiment according to the present invention, the outer diameter of eccentric reaming part and the outer diameter of sleeve are identical.
An embodiment according to the present invention, eccentric reaming part have one first radius, the vertebra Counterboring apparatus of mode of operation
When rotation is turned around, eccentric reaming part is formed by a rotational trajectory with one second radius, and the second radius is greater than the first radius.
An embodiment according to the present invention, force-applying piece is rotated by 90 degrees or 180 degree, makes vertebra Counterboring apparatus in collapse state
And it is converted between mode of operation.
An embodiment according to the present invention, vertebra Counterboring apparatus include a gripping member, are set to the first end of sleeve, and hold
Gripping member is between sleeve and force-applying piece.
An embodiment according to the present invention, eccentric shaft pass through gripping member and connect with force-applying piece.
An embodiment according to the present invention, force-applying piece include a locking unit, the opposite position of fixed force-applying piece and gripping member
It sets.
An embodiment according to the present invention, force-applying piece include one first positioning region, and gripping member includes 2 second positioning regions, when
When force-applying piece is rotated, the first positioning region is moved to another second positioning region by one of 2 second positioning region and is engaged.
An embodiment according to the present invention, gripping member include a guide channel, which is located at guide channel
Opposite two ends, when force-applying piece is rotated, the first positioning region is moved along guide channel.
An embodiment according to the present invention, the first positioning region include a bolt and a driving lever, 2 second positioning region difference
For a recess portion.
Portion is cut with multiple in the outer surface of an embodiment according to the present invention, eccentric reaming part.
An embodiment according to the present invention, vertebra Counterboring apparatus pass through the pedicle of vertebral arch of a vertebra with collapse state, and in vertebra
The centrum of bone is converted to mode of operation.
An embodiment according to the present invention, vertebra Counterboring apparatus further include one by the arm of force, and force-applying piece further includes an accommodation groove
And a force protrusion, eccentric shaft is connected by the arm of force and is placed in accommodation groove, and force protrusion is from the inner wall of accommodation groove to convex by the arm of force
Out, when force-applying piece is rotated, force protrusion is supported by the arm of force.
An embodiment according to the present invention, force-applying piece further include a moving part, and moving part links force-applying piece, and moving part has
There are accommodation groove and force protrusion.
To reach above-mentioned purpose, the present invention separately provides a kind of vertebra Counterboring apparatus comprising a sleeve, two eccentric shafts,
One force-applying piece and two eccentric reaming parts.Sleeve has opposite a first end and a second end.Two eccentric shaft is placed in set
Cylinder.Force-applying piece connects two eccentric shaft, and adjacent to the first end of sleeve.The two eccentric reamings part is separately connected two bias
Axis, and it is located at the second end of sleeve.Force-applying piece can be driven by two eccentric shaft when being rotated the two eccentric reamings part relative to
Sleeve rotating makes vertebra Counterboring apparatus have collapse state and mode of operation.The two eccentric reamings part is in the entirety of collapse state
Outer diameter is less than or equal to the outer diameter of sleeve.
An embodiment according to the present invention, the corresponding side of two eccentric reamings part are mutually matched configuration.
An embodiment according to the present invention, the two eccentric reamings part are respectively provided with a protrusion and a recess portion, and be located at this two
The corresponding side of eccentric reaming part.When collapse state, wherein the recess portion of an eccentric reaming part and another eccentric reaming part
Protrusion cooperates.
An embodiment according to the present invention, vertebra Counterboring apparatus further include two by the arm of force, and force-applying piece further includes an accommodation groove
And two force protrusions, this two is separately connected by the arm of force and two eccentric shaft and is placed in accommodation groove, and the two force protrusion is from accommodating
The inner wall of slot two is protruded respectively to this by the arm of force, and when force-applying piece is rotated, which supports this two by the arm of force respectively.
From the above, vertebra Counterboring apparatus according to the present embodiment comprising a sleeve, an eccentric shaft, a force-applying piece with
An and eccentric reaming part.Eccentric shaft is placed in sleeve, and opposite two ends of eccentric shaft are connected to force-applying piece and eccentric reaming
Part.When force-applying piece is rotated, it can drive eccentric reaming part relative to sleeve rotating by eccentric shaft, have vertebra Counterboring apparatus
There are collapse state and mode of operation.Therefore, vertebra Counterboring apparatus can pass through anatomical structure with the comparatively safe collapse state of size
On more narrow region, such as pedicle of vertebral arch, and being carried out with larger-size mode of operation in may be allowed position in anatomical structure
In reaming, such as centrum at cancellous bone, and then it can avoid the risk for increasing holes using the instrument of larger size.
It is a discovery of the invention that diameter within duct, which will be implanted into, using bone drill or surgical drill in the past is expanded to about 6.5 millimeters to 7 millis
Rice, even if being enough to allow implant to enter and reach struts position, but the implant in implant duct is quite to be oppressed, and is
Can occur, support arm stress in distracted original state is excessive and bending deformation or the related whole angle for leading to implant
It glances off, such as implant becomes non-parallel deflection upward or downward relative to implantation duct.The angular deflection of implant will cause
Unbalance stress when implant struts causes the malformation of implant or can not provide enough holding powers, so that strutting effect not
Problem as expected.The present invention further has found that the upper side support arm in implant especially often occurs for this problem, conversely, if can allow
Upper side support arm can be not directly contacted with bone tissue in the initial state, then can be greatly decreased and this problem occurs.Therefore using this
The vertebra Counterboring apparatus of invention expands implantation duct, struts at position (such as at cancellous bone) in particular for implant is located at, with
The implantation space that internal diameter is greater than implant outer diameter is formed, side support arm in implant can be made not contact bone wall, in distracted initial
Stage will not be immediately subjected to excessive external force, and can first be unfolded to a certain degree, and substantially improve bending deformation or offset implantation road
The problem of diameter.
Detailed description of the invention
Figure 1A and Figure 1B is the schematic diagram of implant used in the reduction therapy of operation on vertebra.
Fig. 2 is the appearance diagram of an embodiment of vertebra Counterboring apparatus of the invention.
Fig. 3 is the decomposition diagram of vertebra Counterboring apparatus shown in Fig. 2.
Fig. 4 is the schematic diagram of the eccentric reaming part of another embodiment of the present invention.
Fig. 5 is the decomposition enlarged diagram of eccentric shaft shown in Fig. 2 and eccentric reaming part.
Fig. 6 A is vertebra Counterboring apparatus shown in FIG. 1 in the enlarged schematic partial view of collapse state.
Fig. 6 B is vertebra Counterboring apparatus shown in FIG. 1 in the enlarged schematic partial view of mode of operation.
Fig. 7 A is the vertebra Counterboring apparatus of collapse state shown in Fig. 6 A in the diagrammatic cross-section of line A-A.
Fig. 7 B is the vertebra Counterboring apparatus of mode of operation shown in Fig. 6 B in the diagrammatic cross-section of line A-A.
Fig. 8 A and Fig. 8 B are the diagrammatic cross-section of the eccentric reaming part of another embodiment of the present invention.
Fig. 9 A and Fig. 9 B are the diagrammatic cross-section of the eccentric reaming part of further embodiment of this invention.
Figure 10 A to Figure 10 E is the operation chart of vertebra Counterboring apparatus shown in FIG. 1.
Figure 11 A is the decomposition diagram of the vertebra Counterboring apparatus of further embodiment of this invention.
Figure 11 B is eccentric shaft shown in Figure 11 A and the partial schematic diagram after moving part combination.
Figure 12 is the combination diagram of the vertebra Counterboring apparatus of further embodiment of this invention.
Figure 13 is the decomposition diagram of vertebra Counterboring apparatus shown in Figure 12.
Figure 14 is the partial schematic diagram after sleeve shown in Figure 13, eccentric shaft and moving part combination.
Figure 15 A is vertebra Counterboring apparatus shown in Figure 12 in the lower view of collapse state.
Figure 15 B be Figure 12 shown in sleeve, eccentric shaft, eccentric reaming part, by the arm of force and moving part under collapse state
View.
Figure 16 is the enlarged diagram of eccentric shaft and eccentric reaming part shown in Figure 15 B.
Figure 17 A is vertebra Counterboring apparatus shown in Figure 12 in the lower view of mode of operation.
Figure 17 B is eccentric shaft, eccentric reaming part shown in Figure 17 A, by the enlarged diagram of the arm of force and moving part.
Wherein, appended drawing reference are as follows:
Vertebra Counterboring apparatus 1,1a, 1b, 1c, 1d, 1e
Sleeve 10,10a, 10b, 10c, 10d, 10e
101 first end 11 of hollow pipeline
12 eccentric shaft 20 of second end, 20a, 20b, 20c, 20d, 20e
Middle shaft part 21a eccentric axial portion 22a
Interlock axle portion 23a force-applying piece 30,30a, 30d, 30e
First positioning region 31,31e bolt 311
312 recess structure 313e, 314e of driving lever
Eccentric reaming part 40,40a, 40b, 40c, 40d, 40e
Cut portion 41,41b, 41c, 41e interconnecting piece 42,42e
Protrusion 43e recess portion 44e
Gripping member 50,50a, 50d, 50e assembly hole 501,501d
Second positioning region 51,52,51e, 52e limiting section 53
By arm of force 60d, 60e moving part 70d, 70e
Accommodation groove 71d, 71e force protrusion 72d, 72e
Vertebra 8 is implanted into duct 801
It is implanted into 802 pedicle of vertebral arch 81 of space
82 implant 9 of centrum
91 central axis C of support arm
First the second radius of radius R1 R2
Rotational trajectory T
Specific embodiment
For that can allow your juror that can know more about technology contents of the invention, spy lifts preferred embodiment and is described as follows.
Firstly, performer before being implanted into implant 9 (please referring to shown in Figure 1A or Figure 1B), can bore first with such as open circuit
(Awl) as the implantation point holes on vertebra 8 (can be referring initially to shown in Figure 10 A), pedicle of vertebral arch 81 is passed through by the path planned in advance and is reached
To at the cancellous bone of centrum 82, implantation duct 801 is formed.Then performer with guide pin (Guide wire) mark implantation duct with
And it is intended to distracted affected part, and by C-arm x-ray machine (abbreviation C-Arm) confirmation implantation path and strut position.In other realities
It applies in example, trochar (Trocar) can also be used in implantation point holes.Trochar is that lever can separate for guide pin insertion
The instrument of its hollow sleeve.
Need to first it illustrate, cheer and bright for purposes of explanation, the present embodiment will be dug out by open circuit brill and bone drill or surgical drill
Channel be known as be implanted into duct 801, and via 1 reaming of vertebra Counterboring apparatus of the present embodiment formed space be known as be implanted into space
802.At the cancellous bone of affected part or other positions in addition to pedicle of vertebral arch can be located at by being implanted into space 802.Such as prior art institute
It states, then performer will expand implantation duct 801.Performer is guiding with guide pin, uses larger-size single bone
Bore or surgical drill (such as outer diameter be 6.5 millimeters to 7 millimeters persons) or multiple bone drills that size is different or surgical drill (such as
Having a size of 3,4,6.5 or 7 millimeters of persons) expand the internal diameter for being implanted into duct 801.But to avoid that holes occurs at pedicle of vertebral arch, at this time
Full-size after implantation duct 801 even expands also is only capable of being confined to 6.5 millimeters to 7 millimeters or less.The present invention its
In his embodiment, performer is with guide pin for guiding, and uses working column (Working cannula) and reamer
(Reamer) the reamer group formed passes through the expansion that guide pin carries out implantation aperture.Benefit using reamer group is can be after reaming
Taking-up reamer retains working column 801 in implantation duct, and guiding includes vertebra Counterboring apparatus 1 and implantation 9 tool of implant
Subsequent instrument inside carries out operation.
Then, performer is further to carrying out at the cancellous bone of centrum 82 using the vertebra Counterboring apparatus 1 of the present embodiment
Reaming, target be to be formed internal diameter be greater than 9 outer diameter of implant implantation space 802.First illustrate the thin portion of vertebra Counterboring apparatus 1 below
After structure, further illustrate that it carries out the mode of reaming.
Fig. 2 is the appearance diagram of an embodiment of vertebra Counterboring apparatus of the invention, and Fig. 3 is vertebra shown in Fig. 2 expansion
The decomposition diagram of aperture apparatus please also refer to shown in Fig. 2 and Fig. 3.In the present embodiment, vertebra Counterboring apparatus 1 includes a set of
10, one eccentric shaft 20 of cylinder, a force-applying piece 30 and an eccentric reaming part 40.Wherein, eccentric shaft 20 is accommodated in a manner of wearing
In sleeve 10.One end of eccentric shaft 20 connects force-applying piece 30, and the other end then connects eccentric reaming part 40.Illustrate for clarity, it will
Sleeve 10 is known as first end 11 adjacent to one end of force-applying piece 30, is known as second end 12 adjacent to one end of eccentric reaming part 40.
Also that is, the sleeve 10 of the present embodiment have opposite first end 11 and second end 12, force-applying piece 30 adjacent to sleeve 10 first
End 11, and eccentric reaming part 40 is located at the second end 12 of sleeve 10.
In the present embodiment, eccentric shaft 20 is strip column, and is placed in set in the eccentric mode in sleeve 10
Cylinder 10, also that is, the axle center of sleeve 10 and the axle center of eccentric shaft 20 are non-coaxial, and the axle center of the two will not change in projecting direction
It closes.In other embodiments of the present invention, eccentric shaft 20a can also be other shapes or cover other components, as shown in figure 4, Fig. 4 is
The schematic diagram of the eccentric reaming part of another embodiment of the present invention.The eccentric shaft 20a of the present embodiment include a middle shaft part 21a, one partially
Mandrel portion 22a and one interlocks axle portion 23a.Wherein, middle shaft part 21a is not intended to limit relative to sleeve 10a wants eccentric, but eccentric axial portion
22a is set to sleeve 10a close at eccentric reaming part 40a, and middle shaft part 21a and eccentric axial portion 22a is by interlocking axle portion 23a
Connection, equally also can achieve identical expansion effect.In other embodiments, also middle shaft part 21a can be connected by gear set
With eccentric axial portion 22a, the present invention is not intended to limit.
In the present embodiment, vertebra Counterboring apparatus 1 further includes a gripping member 50, is set to the first end 11 of sleeve 10, and
Gripping member 50 is between sleeve 10 and force-applying piece 30.Specifically, the gripping member 50 of the present embodiment in a fixed manner with set
Cylinder 10 connects, and eccentric shaft 20 is then to be permanently connected in a manner of passing through the assembly hole 501 of gripping member 50 with force-applying piece 30.
Sleeve 10 has a hollow pipeline 101 (please referring to Fig. 3) outside central axis, and eccentric shaft 20 is rotationally sheathed on hollow pipeline
In 101.Meanwhile eccentric shaft 20 can also rotate in assembly hole 501.When practical operation, performer can be fastened with two fingers and be held
Part 50 exerts a force to force-applying piece 30 with the other hand rotation urging part 30 with stablizing vertebra Counterboring apparatus 1.When performer's rotation is applied
When power part 30, the eccentric shaft 20 for being connected to force-applying piece 30 can rotate in gripping member 50 and sleeve 10, but gripping member 50 and set
Cylinder 10 is then fixed.
The other end of eccentric shaft 20 connects eccentric reaming part 40, therefore when force-applying piece 30 is rotated, eccentric shaft 20 can be passed through
Eccentric reaming part 40 is driven to rotate relative to sleeve 10.Fig. 5 is that the decomposition amplification of eccentric shaft shown in Fig. 2 and eccentric reaming part is shown
It is intended to, referring to FIG. 5, since eccentric shaft 20 connects the position of eccentric reaming part 40, and on non-aligned central shaft C, but partially
To outside central axis C, thus when eccentric reaming part 40 with eccentric shaft 20 be axle center rotate when, rotation and formed radius R2 (in
Afterwards be known as the second radius R2) can be greater than sleeve 10 radius R1 (in it is rear be known as the first radius R1, can be referring initially to Fig. 7 A and Fig. 7 B
It is shown) so that eccentric reaming part 40 can gradually protrude from outside sleeve 10 during rotation one is enclosed, and gradually it is retracted to again
In sleeve 10.When eccentric reaming part 40 protrude from sleeve 10 it is outer when, if vertebra Counterboring apparatus 1 rotates a circle, bias can be passed through
Reaming part 40 generates bigger circular trace, so that cutting vertebra generates the implantation space 802 with larger interior diameter；And when bias
When reaming part 40 is retracted in sleeve 10, then vertebra Counterboring apparatus 1 has and coincides and the consistent sleeve 10 of rotational trajectory and bias
Reaming part 40.In the present embodiment, it is above-mentioned the former be vertebra Counterboring apparatus 1 mode of operation, and the latter be collapse state, Shi Shu
Person can by rotation force-applying piece 30 switch vertebra Counterboring apparatus 1 fold and mode of operation.
In the present embodiment, collapse state refers to eccentric reaming part 40 and sleeve 10 substantially without segment difference, and mode of operation refers to
Eccentric reaming part 40 protrudes from the side of sleeve 10, as shown in Fig. 6 A and Fig. 6 B.Fig. 6 A is vertebra Counterboring apparatus shown in FIG. 1
In the enlarged schematic partial view of collapse state, Fig. 6 B for vertebra Counterboring apparatus shown in FIG. 1, in the part of mode of operation, show by amplification
It is intended to.Fig. 7 A is the vertebra Counterboring apparatus of collapse state shown in Fig. 6 A in the diagrammatic cross-section of line A-A, and Fig. 7 B is shown in Fig. 6 B
Mode of operation vertebra Counterboring apparatus in the diagrammatic cross-section of line A-A, please refer to shown in Fig. 6 A and Fig. 7 A.In the present embodiment
So-called is substantially because of sleeve 10 and the outer diameter having the same of eccentric reaming part 40, by the appearance of sleeve 10 without segment difference
Face and the outer surface of eccentric reaming part 40 do not have the segment difference of height in joining place, and vertebra Counterboring apparatus 1 is from sleeve 10 to bias
The extension of reaming part 40 maintains consistent size (such as Fig. 6 A).But other embodiments of the invention are not limited thereto system, and sleeve
10 can have different sizes and/or shapes from eccentric reaming part 40, for example, sleeve 10 outer diameter than eccentric reaming part 40
Outer diameter is big, or opposite.Although sleeve 10 is different from the outer diameter of eccentric reaming part 40, the two has segment difference in joining place, but as long as
The position that the size of eccentric reaming part 40 connect eccentric shaft 20 with eccentric reaming part 40 can arrange in pairs or groups mutually, make eccentric reaming part 40
Can produce the radius of turn bigger than collapse state in mode of operation (can refer to Fig. 7 A).
It should be noted that the outer surface of the eccentric reaming part 40 of the present embodiment be with multiple cylindrical bodies for cutting portion 41,
Therefore the outer diameter of eccentric reaming part 40 refers to the outer diameter that cylindrical body is formed by by the outer edge line in the portion of cutting 41, with sleeve 10
Outer diameter is substantially the same.Specifically, the eccentric reaming part 40 of the present embodiment cuts portion 41 and an interconnecting piece 42 with multiple, cut
The outer surface that portion 41 is located at the side of eccentric reaming part 40 is cut, the other side is then interconnecting piece 42.The interconnecting piece 42 of the present embodiment has
There is a hole, eccentric shaft 20 can be inserted in interconnecting piece 42.The outer surface of interconnecting piece 42 is not intended to limit whether there is or not the portion of cutting 41, in order to
Retain sufficient space and accommodate eccentric shaft 20, the portion of cutting 41 can be not provided with.
It please refers to shown in Fig. 6 B and Fig. 7 B, when force-applying piece 30 is rotated, eccentric shaft 20 is rotated in sleeve 10, and by
Eccentric shaft 20 drives eccentric reaming part 40 to rotate relative to sleeve 10.Since eccentric shaft 20 is to be sheathed in an eccentric manner
In cylinder 10, and it is connected to the non-central position of eccentric reaming part 40, so eccentric reaming part 40 is with eccentric shaft 20 when rotated
It is eccentrically rotated for axle center relative to sleeve 10, and the portion of cutting 41 is gradually made to protrude from sleeve 10.Portion is cut due to the present embodiment
41 sharpen structure for dentation.In other embodiments, cutting portion 41 also can be helical form or other sharpening structures, or have
The curved surface of similar spoon type, in favor of striking off the tissue in centrum 82.
In the present embodiment, eccentric reaming part 40 and the first radius R1 having the same of sleeve 10, preferably, the first radius
R1 can be between 3 millimeters (mm) between 3.2 millimeters (mm).When the rotation of vertebra Counterboring apparatus 1 of collapse state is turned around, eccentric reaming
It is identical as sleeve 10 that part 40 is formed by rotational trajectory, i.e., is formed by circle with the first radius R1.
After vertebra Counterboring apparatus 1 is switched to mode of operation, as shown in Fig. 6 B and Fig. 7 B, vertebra Counterboring apparatus 1 revolves at this time
It turns around, eccentric reaming part 40 is formed by rotational trajectory T, that is, cuts 41 outer edge of portion and be formed by rotational trajectory T, have
One second radius R2, and the second radius R2 is greater than the first radius R1.Preferably, the second radius R2 can be between 4 millimeters to 7 millimeters
Between, preferably between 6 millimeters to 7 millimeters.Specifically, since the eccentric reaming part 40 of mode of operation protrudes from sleeve 10,
Therefore its radius for being formed by rotational trajectory T (the second radius R2) is greater than radius (the first radius of eccentric reaming part 40 itself
R1).For example, the first radius R1 is 3 millimeters, and the height for cutting portion 41 is 1 millimeter, therefore when mode of operation, bias expands
The length that orifice 40 protrudes from sleeve 10 is about 1 millimeter (wall thickness for deducting sleeve 10 is disregarded).Therefore, rotation vertebra reaming dress
When setting 1, the radius (the second radius R2) that eccentric reaming part 40 is formed by rotational trajectory T is about 4 millimeters.
In other embodiments of the invention, link position, the eccentric shaft 20 of eccentric shaft 20 and eccentric reaming part 40 can be passed through
Eccentric degree and the size of eccentric shaft 20 in sleeve 10 change the size of the second radius R2.Please refer to Fig. 8 A extremely
Fig. 8 B, Fig. 8 A and Fig. 8 B are the diagrammatic cross-section of the eccentric reaming part of another embodiment of the present invention.In the present embodiment, equally make
With eccentric reaming part 40b and sleeve 10b with identical first radius R1, wherein the first radius R1 is also 3 millimeters, such as Fig. 3 institute
Show.But the present embodiment is because actionradius only has 0.75 millimeter of smaller size eccentric shaft 20b, and the position in sleeve 10b
Eccentric degree is higher, while being also attached at eccentric reaming part 40b closer to edge place, so sleeve 10b and eccentric shaft 20b
Between eccentricity it is bigger compared among previous embodiment, so that the second radius R2 can increase when in operating device state
To 6.9 millimeters, as shown in Figure 8 B.Persond having ordinary knowledge in the technical field of the present invention can pass through above-mentioned exposure
Concept adjusts eccentricity, to obtain required the first radius R1 and the second radius R2.
In the aforementioned embodiment, eccentric reaming part 40, which is designed to rotation 180 degree, can allow the second radius R2 to reach most
Greatly, that is, reach the mode of operation of vertebra Counterboring apparatus 1.Similarly, eccentric reaming part 40 can be allowed by rotation 180 degree again
Vertebra Counterboring apparatus 1 restores to collapse state.But invention is not limited thereto, and in other embodiments, eccentric reaming part 40 is also
Can be designed as being rotated by 90 degrees, 120 degree, 150 degree or other degrees and reach mode of operation, or even can be because of different rotations
Angle will lead to the degree outstanding difference of eccentric reaming part 40, select performer according to reaming demand.
Fig. 9 A and Fig. 9 B are the diagrammatic cross-section of the eccentric reaming part of further embodiment of this invention, wherein the vertebra of Fig. 9 A
Counterboring apparatus 1c is collapse state, and the vertebra Counterboring apparatus 1c of Fig. 9 B is mode of operation.In the present embodiment, eccentric reaming part
The section of 40c may be ellipse, and Fig. 9 A and Fig. 9 B, which are represented by dotted lines, to be cut the outer edge line of portion 41c and be formed by ellipse
Shape.And eccentric shaft 20c is connected to one of bifocal of the ellipse (diagrammatic cross-section please refers to shown in Fig. 9 A and Fig. 9 B),
Similarly, such setting, which also can achieve, makes eccentric reaming part 40c have biggish radius of turn (i.e. Fig. 9 B in mode of operation
Shown in the second radius R2).
Preferably, as shown in Figures 2 and 3, force-applying piece 30 includes one first positioning region 31, gripping member 50 includes 2 second
Positioning region 51,52, wherein the first positioning region 31 and the second positioning region 51,52 are the structure that can be mutually clamped.For example, this implementation
First positioning region 31 of example has the structure of protrusion, preferably, the first positioning region 31 includes a bolt 311 (protrusion) and a driving lever
312, corresponding, two the second positioning regions 51,52 are respectively a recess portion.Specifically, the second positioning region 51,52 can for positioned at
Gripping member 50, also can be for through the hole of gripping member 50, the present embodiment be held with running through towards the recess portion on the surface of force-applying piece 30
For the hole of gripping member 50.In other embodiments, the first positioning region 31 also can be recess structure, and the second positioning region 51,52
Correspond to protrusion structure (as shown in figure 12, in rear further explanation) or other can mutually matched structure, the present invention is not
Limitation.In addition, the number of the first positioning region and the second positioning region is also without limitation.
Also, two the second positioning regions 51,52 are oppositely arranged, make the folder between the second positioning region 51 and the second positioning region 52
Angle is 180 degree.Therefore, the every rotation 180 degree of force-applying piece 30, not only can make vertebra Counterboring apparatus 1 in collapse state and mode of operation
Between convert, more by one of the first positioning region 31 and two the second positioning regions 51,52 (i.e. the second positioning region 51 or the
Two positioning regions 52) engaging, vertebra Counterboring apparatus 1 is fixed on collapse state or mode of operation.For example, when the first positioning
When portion 31 engages with the second positioning region 51, i.e., when bolt 311 is inserted in the second positioning region 51, vertebra Counterboring apparatus 1 is fixed on
Collapse state；And when the first positioning region 31 engages with the second positioning region 52, vertebra Counterboring apparatus 1 is fixed on mode of operation.
In other embodiments, also locking unit can be set in force-applying piece 30, by the fixed force-applying piece 30 of locking unit and gripping member 50
Relative position, the present invention is not intended to limit the mode of locking.
In the present embodiment, two the second positioning regions 51,52 are set in a limiting section 53, this limiting section 53 is chase
Design, after the first positioning region 31 is rotated into limiting section 53, it is necessary to can just be produced by large force, it is possible to auxiliary
Operator is helped to convert the state of vertebra Counterboring apparatus 1, especially when the first positioning region 31 is ball-type protrusion rather than bolt, limit
The design in portion 53 is more advantageous to operation.
In other embodiments, gripping member 50 also may include a guide channel, the bolt as the first positioning region 31 of guiding
311 mobile tracks.Also, two the second positioning regions 51,52 are located at opposite two ends of guide channel, when force-applying piece 30 is rotated
When, move the bolt 311 of the first positioning region 31 can along guide channel.First positioning region 31 is moved to from the second positioning region 51
Two positioning regions 52, make vertebra Counterboring apparatus 1 switch to mode of operation；First positioning region 31 is moved to second from the second positioning region 52
Positioning region 51 makes vertebra Counterboring apparatus 1 revert to collapse state.
Vertebra Counterboring apparatus 1 can be fixed the performer that is more convenient in collapse state or mode of operation to the centrum 82 of patient
Carry out reaming.Figure 10 A to Figure 10 E is the operation chart of vertebra Counterboring apparatus shown in FIG. 1, please refers to Figure 10 A to Figure 10 E institute
Show, illustrates details of operation of the vertebra Counterboring apparatus 1 for reaming below, while illustrating the first positioning region 31 and the second positioning region
51,52 engaging actuation.Need to first it illustrate, to keep drawing more clear, Figure 10 A to Figure 10 E does not show other nondominant hands
The instrument of art, such as work sleeve or guide pin.For example, using casing pyonex formula when carrying out this pore widening step, performer
Vertebra Counterboring apparatus 1 can be inserted into work sleeve, vertebra Counterboring apparatus 1 reaches after at reaming just by the guidance of work sleeve
Carry out reaming.
Performer first can sequentially utilize open circuit brill, probe and bone before the vertebra Counterboring apparatus 1 using the present embodiment
It bores with instruments such as surgical drills in the implantation point on vertebra 8, is formed at the cancellous bone that pedicle of vertebral arch 81 reaches centrum 82
It is implanted into duct 801.Then, vertebra Counterboring apparatus 1 can be placed in implantation duct 801 with collapse state by performer, pass through pedicle of vertebral arch
81 arrival are default with the distracted affected part of implant, as shown in Figure 10 A.For safety, the outer diameter of bone drill or surgical drill is usually less than
About 6.5 millimeters to 7 millimeters, therefore its 801 internal diameter of implantation duct formed is also smaller than about 6.5 millimeters to 7 millimeters.And the present embodiment
The radius (the first radius R1) of eccentric reaming part 40 is between 3 millimeters to 3.2 millimeters, therefore its 40 entirety of eccentric reaming part is outer
Diameter is between 6 millimeters to 6.4 millimeters, less than the internal diameter (6.5 millimeters) in implantation duct 801, and then can be by pedicle of vertebral arch 81 simultaneously
Into centrum 82.
Then, vertebra Counterboring apparatus 1 can be switched to mode of operation by performer.Specifically, first by driving lever 312 toward applying
Direction inside power part 30 presses (such as Figure 10 A), and bolt 311 is raised off the second positioning region 51 (such as Figure 10 B) at this time.It connects
, performer can fix gripping member 50 on the other hand, and force-applying piece 30 is rotated 180 degree by the other hand.At this point, the first positioning region 31 is rotated
180 degree, and the second positioning region 52 (such as Figure 10 C) is moved to from the second positioning region 51.At this point, eccentric shaft 20 drives eccentric reaming
Part 40 rotates, and the portion 41 that cuts of eccentric reaming part 40 is made to protrude from sleeve 10.It should be noted that Figure 10 A and Figure 10 B are close
Visual angle at second positioning region 51, and Figure 10 C and Figure 10 D are the visual angle at the second positioning region 52.When bolt 311 is moved to
When the second positioning region 52, then driving lever 312 stirred toward far from the direction of force-applying piece 30, with the visual angle of Figure 10 C be dial up to
The state of Figure 10 D, bolt 311 can be inserted in the second positioning region 52, engage the first positioning region 31 with the second positioning region 52, into
And vertebra Counterboring apparatus 1 is made to be fixed on mode of operation, as shown in Figure 10 D.Therefore, the vertebra Counterboring apparatus 1 of the present embodiment in
Mode of operation is reconverted into after in into the centrum 82 of vertebra 8.It should be noted that needing group in its centrum of the patient of such operation
Knit all because lesion or injury cause it is fragile or loose, though so rotation urging part 30 so that eccentric reaming part 40 is produced sleeve 10 can be by
Resistance is arrived, but still is feasible.
Finally, the entirety of the vertebra Counterboring apparatus 1 of rotation mode of operation.Since force-applying piece 30 and gripping member 50 have passed through
First positioning region 31 is mutually clamped with the second positioning region 52, therefore performer can only hold and rotation urging part 30, can make vertebra
The unitary rotation of Counterboring apparatus 1.When the unitary rotation of vertebra Counterboring apparatus 1, cutting portion 41 and can scraping for sleeve 10 is protruded from
Except the bone tissue in centrum 82, the biggish implantation space 802 of outer diameter is formed to expand implantation duct 801, as shown in figure 10e.By
In the present embodiment vertebra Counterboring apparatus 1 after entering centrum 82, the beginning is converted into mode of operation and carries out reaming, therefore can avoid big ruler
The problem of by pedicle of vertebral arch holes occurs for very little instrument can also carry out reaming for 9 opened part of implant in specific manner, reduce not
The operation risk needed.
The internal diameter that implantation duct 801 is formed by by bone drill and surgical drill is about 6.5 millimeters, due to the bias of the present embodiment
Reaming part 40 protrudes from the length of sleeve 10 for 1 millimeter (the second radius R2 is for 4 millimeters), therefore through this embodiment
Vertebra Counterboring apparatus 1, which bores open circuit, is formed by 1 millimeter of the expansion outward again of implantation duct, makes to expand the plant formed in centrum 82
The outer diameter of implant 9 can be preferably greater than between 8 millimeters to 8.5 millimeters by entering space 802.It is subsequent by 8 millimeters of outer diameter of plant
After body 9 is sent into the implantation space 802 for being located at centrum 82, the initial deployment space of implant 9 slightly is provided, is provided in particular in upside
(because of gravity factor, the lower side support arm of implant 9 is still directly contacted with bone tissue, the sky having more in support arm 91 initial deployment space
Between be kept on side support arm 91), that is, the upper side support arm 91 of implant 9 be first unfolded outward it is some after, then with centrum 82
Inner wall generate interference, and then can avoid provide exceptional space, be conducive to operate, it might even be possible to reduce 9 malformation of implant or
Stress causes implant 9 to deviate and the risk that can not provide enough holding powers etc..
In other embodiments of the present invention, vertebra Counterboring apparatus 1 can also be cut with eliminating tissue, such as applied to interverbebral disc
Except art (Discectomy) to remove interverbebral disc internal layer nucleus pulposus (Nucleus pulposus).Specifically, performer can lead to
It crosses trochar or introscope passes through outer layer fiber ring (annulus fibrosis), then by vertebra Counterboring apparatus 1 with collapse state
Reach internal layer nucleus pulposus across working column or introscope casing, thereafter converts vertebra Counterboring apparatus 1 to mode of operation, by inclined
Heart reaming part 40 cuts nucleus pulposus, to reach therapeutic effect.Certainly, the present invention is not limited to remove vertebra linked groups, other
May achieve therapeutic purposes person also by reaming cutting way can be used.
Figure 11 A is the decomposition diagram of the vertebra Counterboring apparatus of further embodiment of this invention, and Figure 11 B is shown in Figure 11 A
Partial schematic diagram after eccentric shaft and moving part combination, please also refer to shown in Figure 11 A and Figure 11 B.In the aforementioned embodiment,
Eccentric shaft 20 can be directly fastened to force-applying piece 30, and the force-applying piece 30d of the present embodiment then can be connected and be driven by other assemblies
Eccentric shaft 20d rotation.In the present embodiment, vertebra Counterboring apparatus 1d further includes one by an arm of force 60d and moving part 70d, interlocks
Part 70d is set to the inside of force-applying piece 30d, and moving part 70d has the force of an accommodation groove 71d and one protrusion 72d.By the arm of force
60d connection eccentric shaft 20d is simultaneously placed in accommodation groove 71d.Specifically, wherein one end of eccentric shaft 20d passes through gripping member 50d
Assembly hole 501d and sleeve 10d after, be connected with eccentric reaming part 40d.The another of eccentric shaft 20d is connected to by arm of force 60d
End, part eccentric shaft 20d and is placed in the accommodation groove 71d of moving part 70d jointly by arm of force 60d, as shown in Figure 11 B.At this
In embodiment, it is integrally formed by arm of force 60d and eccentric shaft 20d.
Also, force protrusion 72d is protruded from the inner wall of accommodation groove 71d to by arm of force 60d, and it is located at by the opposite of arm of force 60d
Two sides.In addition, moving part 70d links force-applying piece 30d, preferably, moving part 70d is fixed in force-applying piece 30d, so when applying
When power part 30d is rotated, the related drive moving part 70d of meeting is rotated together.At this point, force protrusion 72d contact and push by the arm of force
60d rotation, and then by being driven eccentric shaft 20d rotation by arm of force 60d.For example, force-applying piece 30d in a clockwise direction by
When rotation, moving part 70d is rotated clockwise together with force-applying piece 30d.By taking the visual angle of Figure 11 B as an example, it is located at by the downside of arm of force 60d
Force protrusion 72d can push by arm of force 60d toward rotationally clockwise.Meanwhile by arm of force 60d drive eccentric shaft 20d in
It is rotated in a clockwise direction in sleeve 10d, and drives eccentric reaming part 40d to rotate relative to sleeve 10d by eccentric shaft 20d.This
The moving part 70d of embodiment includes accommodation groove 71d and force protrusion 72d, and moving part 70d is set to the interior of force-applying piece 30d
Portion, in other embodiments, accommodation groove 71d and force protrusion 72d are also formed directly in the inside of force-applying piece 30d, the present invention
It is not intended to limit.
In addition, the vertebra Counterboring apparatus of previous embodiment includes an eccentric shaft and an eccentric reaming part, the present invention is also
The quantity of eccentric shaft and eccentric reaming part is not limited, as shown in FIG. 12 and 13.Figure 12 is the vertebra of further embodiment of this invention
The combination diagram of Counterboring apparatus, Figure 13 are the decomposition diagram of vertebra Counterboring apparatus shown in Figure 12.In the present embodiment, ridge
Vertebra Counterboring apparatus 1e includes a sleeve 10e, two eccentric shaft 20e, a force-applying piece 30e, two eccentric reaming part 40e and a gripping member
50e.Wherein, two eccentric shaft 20e are placed in sleeve 10e, and all in such a way that bias passes through sleeve 10e, i.e. the two of sleeve 10e
The axle center of a eccentric shaft 20e is non-coaxial, and the axle center of three will not coincide in projecting direction.
The vertebra Counterboring apparatus 1e of the present embodiment further includes two and is passed through by arm of force 60e and a moving part 70e, force-applying piece 30e
By two eccentric shaft 20e of arm of force 60e and moving part 70e connection.Figure 14 is sleeve shown in Figure 13, eccentric shaft and moving part combination
Partial schematic diagram afterwards please arrange in pairs or groups with reference to shown in Figure 14.Moving part 70e includes accommodation groove 71e and two force protrusion 72e.Two
After wherein one end of a eccentric shaft 20e passes through gripping member 50e and sleeve 10e, to be separately connected two eccentric reaming part 40e.Two
A other end that two eccentric shaft 20e are then connected to by arm of force 60e, and part eccentric shaft 20e is placed in by arm of force 60e
In accommodation groove 71e.Likewise, two force protrusion 72e are protruded from the inner wall of accommodation groove 71e to two by arm of force 60e respectively.Even
Moving part 70e links force-applying piece 30e, and when force-applying piece 30e is rotated, moving part 70e is rotated together together with force-applying piece 30e.Together
When, the protrusion 72e contact that exerts a force is made to be further driven to eccentric shaft 20e rotation by arm of force 60e by arm of force 60e.
Figure 15 A is vertebra Counterboring apparatus shown in Figure 12 in the lower view of collapse state, and Figure 15 B is to cover shown in Figure 12
Cylinder, eccentric shaft, eccentric reaming part, by the arm of force and moving part in the lower view of collapse state, please also refer to Figure 12, Figure 15 A and
Shown in Figure 15 B.In the present embodiment, two eccentric reaming part 40e two eccentric shaft 20e of connection, and vertebra Counterboring apparatus 1e in
When collapse state, the entire outer diameter of two eccentric reaming part 40e is less than or equal to the outer diameter of sleeve 10e.Likewise, eccentric expand
The outer surface of orifice 40e outwardly, which has, cuts portion 41e, and the entire outer diameter of two eccentric reaming part 40e, which refers to, cuts portion by two
The outer edge line of 41e is formed by the outer diameter of cylindrical body.The entire outer diameter of two eccentric reaming part 40e is less than or equal to sleeve
The outer diameter of 10e makes vertebra Counterboring apparatus 1e when collapse state, and two eccentric reaming part 40e are outer without departing from sleeve 10e
Side.Preferably, the entire outer diameter of two eccentric reaming part 40e and the outer diameter of sleeve 10e are substantially the same, as shown in fig. 15b.
Figure 16 is the enlarged diagram of eccentric shaft and eccentric reaming part shown in Figure 15 B, is please referred to shown in Figure 16.Preferably
, the corresponding side two eccentric reaming part 40e is mutually matched configuration.For example, two eccentric reaming part 40e have respectively
There is an a protrusion 43e and recess portion 44e, and is located at the corresponding side two eccentric reaming part 40e.When collapse state, wherein
The recess portion 44e of one eccentric reaming part 40e can cooperate with the protrusion 43e of another eccentric reaming part 40e, make two bias
The corresponding side reaming part 40e can be bonded to each other.
In the present embodiment, the first positioning region 31e of force-applying piece 30e is the recess portion positioned at opposite two sides of force-applying piece 30e
Structure 313e, 314e.Corresponding, two second positioning regions 51e, 52e are arranged towards the surface of force-applying piece 30e in gripping member 50e, and
Second positioning region 51e, 52e is protrusion structure.As shown in fig. 15, the present embodiment is with four recess structures 313e, 314e (two
Group the first positioning region 31e) and four second positioning regions 51e, 52e for illustrate.Preferably, gripping member 50e is towards force-applying piece
The surface of 30e is positive square, and the second positioning region 51e (or 52e) is respectively set in neighbouring four corners.
When vertebra Counterboring apparatus 1e is when collapse state, the second positioning region 51e of gripping member 50e is placed in force-applying piece 30e
The first positioning region 31e recess structure 313e in, as shown in fig. 15.When performer must switch to vertebra Counterboring apparatus 1e
Force-applying piece 30e is rotated 90 degree by mode of operation.Preferably, by recess structure 313e, 314e and second positioning region 51e, 52e
Setting, limitation force-applying piece 30e rotate 90 degree (by taking visual angles of Figure 15 A as an example) in a counterclockwise direction.Figure 17 A is shown in Figure 12
Vertebra Counterboring apparatus in the lower view of mode of operation, as Figure 17 B be eccentric shaft shown in Figure 17 A, eccentric reaming part, by the arm of force and
The enlarged diagram of moving part, as shown in Figure 17 A and Figure 17 B, when force-applying piece 30e is rotated, two by arm of force 60e band respectively
Dynamic two eccentric shaft 20e drive two eccentric reaming part 40e by two eccentric shaft 20e in rotating in a counterclockwise direction respectively
It is rotated in a counterclockwise direction relative to sleeve 10e, the portion 41e that cuts of eccentric reaming part 40e is unfolded outward, with formation operation shape
State.At this point, the second positioning region 52e of gripping member 50e is placed in the recess structure 314e of the first positioning region 31e.
In conclusion vertebra Counterboring apparatus according to the present embodiment comprising a sleeve, an eccentric shaft, a force-applying piece with
An and eccentric reaming part.Eccentric shaft is placed in sleeve, and opposite two ends of eccentric shaft are connected to force-applying piece and eccentric reaming
Part.When force-applying piece is rotated, it can drive eccentric reaming part relative to sleeve rotating by eccentric shaft, have vertebra Counterboring apparatus
There are collapse state and mode of operation.Therefore, vertebra Counterboring apparatus can with the lesser collapse state of size pass through anatomical structure on compared with
For narrow region, such as pedicle of vertebral arch, and reaming is carried out in may be allowed position in anatomical structure with larger-size mode of operation,
Such as in centrum at cancellous bone, and then it can avoid the risk for increasing holes using the instrument of larger size.
It is a discovery of the invention that the internal diameter for being implanted into duct is expanded to 6.5 millimeters using bone drill or surgical drill in the past, even if being enough
It allows implant to enter and reaches and strut position, but the implant in implant duct is quite to be oppressed, and it is limited to generate space
Lead to inconvenient problem, and the risk for deforming or deviating with implant structure increases, such as support arm is distracted first
Stress is excessive when beginning state and bending deformation or unbalance stress lead to the whole implantation path offset relative to planning of implant.
The present invention further has found that the upper side support arm in implant especially often occurs for this problem, conversely, if side support arm can be allowed to exist
It can be not directly contacted with bone tissue when original state, then can be greatly decreased and this risk occurs.Therefore being expanded using vertebra of the invention
Aperture apparatus expands implantation duct, struts at position (such as at cancellous bone) in particular for implant is located at, is greater than with forming internal diameter
The implantation space of implant outer diameter can make side support arm in implant not contact bone wall, will not be immediately in the distracted initial stage
Excessive external force is born, and can be first unfolded to a certain degree, and substantially improves the above problem and risk.
Claims (20)
1. a kind of vertebra Counterboring apparatus characterized by comprising
One sleeve has opposite a first end and a second end；
One eccentric shaft is placed in the sleeve；
One force-applying piece connects the eccentric shaft, and adjacent to the first end of the sleeve；And
One eccentric reaming part connects the eccentric shaft, and is located at the second end of the sleeve, and wherein the force-applying piece is rotated Shi Huitong
Crossing the eccentric shaft drives the eccentric reaming part relative to the sleeve rotating, and the vertebra Counterboring apparatus is made to have collapse state and operation
State.
2. vertebra Counterboring apparatus as described in claim 1, which is characterized in that the eccentric reaming part is using the eccentric shaft as axle center phase
The sleeve is eccentrically rotated.
3. vertebra Counterboring apparatus as described in claim 1, which is characterized in that the collapse state is the eccentric reaming part and the set
For cylinder without segment difference, which is that the eccentric reaming part protrudes from the sleeve side.
4. vertebra Counterboring apparatus as described in claim 1, which is characterized in that the outer diameter of the eccentric reaming part is outer with the sleeve
Diameter is identical.
5. vertebra Counterboring apparatus as described in claim 1, which is characterized in that the eccentric reaming part has one first radius, should
The vertebra Counterboring apparatus rotation of mode of operation is when turning around, which is formed by a rotational trajectory with one the second half
Diameter, second radius are greater than first radius.
6. vertebra Counterboring apparatus as described in claim 1, which is characterized in that the force-applying piece is rotated by 90 degrees or 180 degree, makes this
Vertebra Counterboring apparatus is converted between the collapse state and the mode of operation.
7. vertebra Counterboring apparatus as described in claim 1, which is characterized in that the vertebra Counterboring apparatus further includes a gripping member,
It is set to the first end of the sleeve, and the gripping member is located between the sleeve and the force-applying piece.
8. vertebra Counterboring apparatus as claimed in claim 7, which is characterized in that the eccentric shaft passes through the gripping member and the force-applying piece
Connection.
9. vertebra Counterboring apparatus as claimed in claim 7, which is characterized in that the force-applying piece includes a locking unit, fixed to be somebody's turn to do
The relative position of force-applying piece and the gripping member.
10. vertebra Counterboring apparatus as claimed in claim 7, which is characterized in that the force-applying piece includes one first positioning region, this is held
Gripping member includes 2 second positioning regions, and when the force-applying piece is rotated, first positioning region is by one of 2 second positioning region
It is moved to another second positioning region and engages.
11. vertebra Counterboring apparatus as claimed in claim 10, which is characterized in that the gripping member includes a guide channel, this 2 the
Two positioning regions are located at opposite two ends of the guide channel, and when the force-applying piece is rotated, first positioning region is along the guide channel
It is mobile.
12. vertebra Counterboring apparatus as claimed in claim 10, which is characterized in that first positioning region includes a bolt and one group
Bar, which is respectively a recess portion.
13. vertebra Counterboring apparatus as described in claim 1, which is characterized in that the outer surface of the eccentric reaming part has multiple
Cut portion.
14. vertebra Counterboring apparatus as described in claim 1, which is characterized in that pass through the vertebral arch of a vertebra with the collapse state
Root, and the mode of operation is converted in the centrum of the vertebra.
15. vertebra Counterboring apparatus as described in claim 1, which is characterized in that the vertebra Counterboring apparatus further includes one by the arm of force,
The force-applying piece further includes an accommodation groove and a force protrusion, should be connected the eccentric shaft by the arm of force and be placed in the accommodation groove, this is applied
Power protrusion is protruded to this by the arm of force from the inner wall of the accommodation groove, and when which is rotated, which supports this by the arm of force.
16. vertebra Counterboring apparatus as claimed in claim 15, which is characterized in that the vertebra Counterboring apparatus further includes a gearing
Part, which links the force-applying piece, and the moving part has the accommodation groove and the force protrusion.
17. a kind of vertebra Counterboring apparatus characterized by comprising
One sleeve has opposite a first end and a second end；
Two eccentric shafts are placed in the sleeve；
One force-applying piece connects two eccentric shaft, and adjacent to the first end of the sleeve；And
Two eccentric reaming parts are separately connected two eccentric shaft, and are located at the second end of the sleeve, and wherein the force-applying piece is rotated
When can drive the two eccentric reamings part relative to the sleeve rotating by two eccentric shaft, make the vertebra Counterboring apparatus have fold
State and mode of operation, the two eccentric reamings part are less than or equal to the outer diameter of the sleeve in the entire outer diameter of collapse state.
18. vertebra Counterboring apparatus as claimed in claim 17, which is characterized in that the corresponding side of two eccentric reamings part is
Mutually matched configuration.
19. vertebra Counterboring apparatus as claimed in claim 18, which is characterized in that the two eccentric reamings part is respectively provided with a protrusion
And a recess portion, and be located at the corresponding side of two eccentric reamings part, when collapse state, wherein the eccentric reaming part should
The protrusion of recess portion and another eccentric reaming part cooperates.
20. vertebra Counterboring apparatus as claimed in claim 17, which is characterized in that further include two by the arm of force, which more wraps
An accommodation groove and two force protrusions are included, this two is separately connected two eccentric shaft by the arm of force and is placed in the accommodation groove, two force
Protrusion from the inner wall of the accommodation groove to respectively this two protruded by the arm of force, when which is rotated, which supports respectively
This is pushed up two by the arm of force.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107114238 | 2018-04-26 | ||
| TW107114238A TWI649062B (en) | 2018-04-26 | 2018-04-26 | Spinal reaming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110403664A true CN110403664A (en) | 2019-11-05 |
Family
ID=66213461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910337392.3A Pending CN110403664A (en) | 2018-04-26 | 2019-04-25 | Vertebra Counterboring apparatus |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US11076870B2 (en) |
| EP (1) | EP3560441A1 (en) |
| CN (1) | CN110403664A (en) |
| TW (1) | TWI649062B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11253369B2 (en) | 2016-03-14 | 2022-02-22 | Wiltrom Co., Ltd. | Spinal implant structure and kit thereof |
| USD880694S1 (en) | 2017-05-01 | 2020-04-07 | Aerin Medical, Inc. | Nasal airway medical instrument |
| USD878586S1 (en) * | 2017-09-07 | 2020-03-17 | G21 S.R.L. | Biomedical device |
| USD879293S1 (en) * | 2017-09-07 | 2020-03-24 | G21 S.R.L. | Biomedical device |
| TWI720677B (en) * | 2019-11-05 | 2021-03-01 | 台灣微創醫療器材股份有限公司 | Spinal implant structure |
| JP2023550531A (en) * | 2020-12-18 | 2023-12-01 | スパイン・ウェーヴ・インコーポレイテッド | Expandable TLIF Devices and Related Insertion Implants |
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Also Published As
| Publication number | Publication date |
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| TWI649062B (en) | 2019-02-01 |
| US20190328406A1 (en) | 2019-10-31 |
| EP3560441A1 (en) | 2019-10-30 |
| US11076870B2 (en) | 2021-08-03 |
| TW201944966A (en) | 2019-12-01 |
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